Write an expression equivalent to 15k + 6 - 9k - 8

6k+−2

Step-by-step explanation:

=15k+6+−9k+−8

=(15k+−9k)+(6+−8)

=6k+−2

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).

3/6   and 9/18

step-by-step explanation: